Annual and transition report of foreign private issuers pursuant to Section 13 or 15(d)

Commitments And Contingencies (Unrecorded Contractual Commitments For The Purchase Of Flight Equipment) (Details)

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Commitments And Contingencies (Unrecorded Contractual Commitments For The Purchase Of Flight Equipment) (Details) - Purchase Obligations [Member]
$ in Thousands
12 Months Ended
Dec. 31, 2016
USD ($)
item
Unrecorded Unconditional Purchase Obligation [Line Items]  
Unrecorded Number of forward orders | item 396
Unrecorded Number of purchase-leaseback transactions | item 24
Flight Equipment [Member]  
Unrecorded Unconditional Purchase Obligation [Line Items]  
2017 $ 5,051,158 [1]
2018 6,028,196 [1]
2019 5,084,565 [1]
2020 3,624,926 [1]
2021 2,838,730 [1]
2022 534,991 [1]
Total $ 23,162,566 [1]
[1] Includes commitments to purchase 396 aircraft and 24 purchase and leaseback transactions.